Read Panasonic PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA Service Manual online
PT-LB20NTU
PT-LB20NTE
PT-LB20NTEA
PT-LB20U
PT-LB20E
PT-LB20EA
PT-LB20SU
PT-LB20SE
PT-LB20SEA
PT-LB20VU
PT-LB20VE
PT-LB20VEA
PT-LB20NTE
PT-LB20NTEA
PT-LB20U
PT-LB20E
PT-LB20EA
PT-LB20SU
PT-LB20SE
PT-LB20SEA
PT-LB20VU
PT-LB20VE
PT-LB20VEA
LCD Projector
ORDER NO. VED0504362C0
D10
2
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
1
Safety Precautions
5
1.1.
General Guidelines
5
CONTENTS
Page
Page
3
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA
1.2.
Leakage Current Check
5
1.3.
UV Precaution and UHM Lamp Precautions
5
2
Ext Option
6
2.1.
Procedure to enter EXT OPTION
6
2.2.
EXT OPTION Menu and Functions
6
2.3.
Canceling EXT OPTION
7
3
Self-Check Mode
7
3.1.
Procedure to enter the self-check mode
7
3.2.
Self Check Display and Contents
8
3.3.
Canceling the self-check mode
8
4
Service Mode
9
4.1.
Procedure to enter the service mode
9
4.2.
Canceling the service mode
9
5
Flicker Adjustment Mode
9
5.1.
Procedure to enter the adjustment mode
9
5.2.
Adjustment Display and Contents
9
5.3.
Canceling the flicker adjustment mode
9
6
Using the SERIAL Connector
10
6.1.
Connection
10
6.2.
Pin Layout and Signal Names for SERIAL Connector 10
6.3.
Communication Settings
10
6.4.
Basic Format
11
6.5.
Control / Query Commands
11
6.6.
Communication Cable Specifications
13
6.7.
Signal Selector Connecting Cable Specifications
14
7
Disassembly Instructions
15
7.1.
Printed Circuit Board and Main Parts Location
15
7.2.
Removal of Upper Case
16
7.3.
Removal of A-P.C.Board
16
7.4.
Removal of WL-P.C.Board (PT-LB20NTU/E/EA only) 17
7.5.
Removal of S1-P.C.Board
17
7.6.
Removal of S2-P.C.Board
17
7.7.
Removal of K-P.C.Board
17
7.8.
Removal of B/Q-Module
18
7.9.
Removal of P-Module
18
7.10. Removal of Lamp Unit
19
7.11. Removal of Analysis Block and Lens
19
7.12. Removal of LCD Block
20
7.13. Replacement of LCD Panel
20
7.14. LCD Panel Discrimination
21
7.15. LCD Panel Combination
21
7.16. Replacement of Incidence Polarizer (R and B)
21
7.17. Replacement of Incidence Polarizer (G)
22
7.18. Replacement of Projection Polarizer
22
7.19. Replacement of PBS Array (Analysis Block)
23
8
Measurement and Adjustments
24
8.1.
Adjustment Procedure Flowchart
24
8.2.
Cautions for Adjustment
24
8.3.
Setting Before Adjustment
24
8.4.
Convergence Adjustment
24
8.5.
Lighting Area Adjustment
25
8.6.
Software for Adjustment
27
8.7.
Flicker Adjustment
28
8.8.
Input Level Adjustment
28
8.9.
Model Information Setup
29
9
Troubleshooting
30
10 Interconnection Block Diagram
41
10.1. Interconnection Block Diagram (1/2)
41
10.2. Interconnection Block Diagram (2/2)
42
11 Block Diagram
43
11.1. Power Supply
43
11.2. Signal Processing (1/3)
44
11.3. Signal Processing (2/3)
45
11.4. Signal Processing (3/3)
46
12 Schematic Diagram
47
12.1. A-P.C.Board (1/4)
48
12.2. A-P.C.Board (2/4)
49
12.3. A-P.C.Board (3/4)
50
12.4. A-P.C.Board (4/4)
51
12.5. WL-P.C.Board (1/2)
52
12.6. WL-P.C.Board (2/2)
53
12.7. B-Module (1/2)
54
12.8. B-Module (2/2)
55
12.9. K-P.C.Board
56
12.10. S1-P.C.Board, S2-P.C.Board
57
13 Circuit Boards
59
13.1. A-P.C.Board (Foil Side) / WL-P.C.Board (Foil
Side/Component Side)
59
13.2. A-P.C.Board (Component) / S1-P.C.Board (Foil
Side/Component Side)
60
14 Terminal guide of ICs and transistors
61
15 Exploded Views
62
16 Replacement Parts List
65
4
PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA